Process for making substituted 2H-3,1-benzoxazine-2,4(1H)-diones

Process for making substituted 2H-3,1-benzoxazine-2,4(1H)-diones

Disclosed is a method for preparing a compound of Formula 2 by contacting a compound of Formula 4 with phosphorus tribromide. H 3 N 0 NHCO 2 R wherein R 2 is CH3 or Cl; R 3 is Ci-C 6 alkyl or C3-C 6 alkenyl, each optionally substituted 5 with up to 3 halogen and up to 1 phenyl; and X is Cl or Br.

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Bibliographische Detailangaben
Hauptverfasser: TAYLOR, ERIC DEGUYON, DAVIS, RICHARD FRANK, SHAPIRO, RAFAEL
Format: Patent
Sprache:eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:Disclosed is a method for preparing a compound of Formula 2 by contacting a compound of Formula 4 with phosphorus tribromide. H 3 N 0 NHCO 2 R wherein R 2 is CH3 or Cl; R 3 is Ci-C 6 alkyl or C3-C 6 alkenyl, each optionally substituted 5 with up to 3 halogen and up to 1 phenyl; and X is Cl or Br.